Trust Delaware’s Most Experienced Commercial and Mechanical Contractor
Superior Quality HVAC & Plumbing Installation Solutions for Your Business Built on a Foundation of Quality Work at a Fair Price
Ralph G. Degli Obizzi & Sons (RGD) has earned the confidence of well-known healthcare and education institutions, as well as many commercial and industrial client partners throughout the Delaware Valley, based on an uncompromising dedication to quality HVAC and new construction plumbing installation work. And we are ready to meet your needs for quality work at a fair price. That’s the RGD promise.
Services
Discover Our Specialized Commercial Mechanical Construction Services
Not all HVAC and plumbing contractors are the same. At RGD & Sons, we are a complete commercial mechanical contracting company for small and large businesses, institutions, and industrial partners in Delaware and beyond. This means we are laser-focused on the construction of plumbing and HVAC systems, including process and power piping, within high-occupancy facilities like hotels, schools, hospitals, and municipal services buildings. With in-house engineering, our design/build capabilities allow us to provide our valued partners with quality work from the project modeling phase to system implementation. We also employ a network of trusted subcontractors to perform HVAC service work when construction is complete.
Complete Commercial HVAC System and Equipment Installation
The RGD & Sons team is deeply experienced in designing and building out entire heating, ventilation, and air conditioning (HVAC) systems, including the installation of all necessary commercial-grade equipment, such as process and power piping, chillers, cooling towers, and geothermal components.
Full-Service Commercial New Construction Plumbing Installation
Our diverse plumbing capabilities encompass a full range of construction services provided by an experienced team of master plumbers, journeymen, and apprentices. RGD & Sons installs water service piping of all types, sanitary waste and vent piping, process waste piping, medical gas piping, and more.
Underground Piping and Tank Construction
Commercial plumbing system construction often involves extending piping and building out infrastructure underground—something that not all plumbing services providers can handle. RGD & Sons is well-known for quality work in underground pipe installation and large tank burials.
Commercial Plumbing Fixture Installation
While piping work is an RGD & Sons specialty, our commercial plumbers are also ready to install various plumbing fixtures, including bathroom sinks, toilets, and components needed within commercial kitchens. Sprinkler system installations are another area of plumbing construction in which we excel.
Building Information Modeling and Engineering
An efficient and economical approach to any commercial HVAC system or plumbing installation starts with solid engineering and planning work in the pre-build design phase. RGD & Sons has in-house engineering capabilities and performs CAD system work, allowing us to bring more value to our partners.
Pipe Welding and Fabrication
Custom fabrication is integral to the process when providing complete mechanical construction services. Our certified welders perform all types of welding for both commercial and industrial applications, and these talented individuals take a safety-first approach to their craft as well.
Explore Some of Our Recent Projects
About
Commitment to Quality Work is a Family Tradition. Since 1969.
RGD & Sons is a high-performing, family-run mechanical contracting business with a reputation for exceptional work. Founder Ralph G. Degli Obizzi often said, “If you can’t do a job right, then you don’t do it at all.” This was more than a simple statement, but a philosophy that has shaped every aspect of our approach to operating RGD & Sons into the succeeding generations. Our continued commitment to fair pricing and uncompromising quality standards upholds the company’s founding vision and leads us to provide the best plumbing services and commercial HVAC work in Delaware and beyond.
As we move into our 3rd generation of superior plumbing and HVAC services, RGD & Sons remains uniquely dedicated to safety. As we often complete projects in occupied institutional environments, this means looking out for the well-being of our customers’ teams in addition to our own—and we are a proven leader in this way. RGD & Sons has been recognized with both the Associated Builders and Contractors (ABC) Business Roundtable Construction Industry Safety Excellence Award and an ABC National Safety Training and Education Award.
Of all the things we’ve built, we’re most proud of our reputation.
“My father believed that the true measure of a mechanical contractor wasn’t just in the work we did—but in doing it with integrity. ‘Quality work at a fair price,’ he always said, ‘because that’s how you build trust that lasts longer than any project.”
Matthew T. Degli Obizzi
President
Careers
Connect with RGD & Sons about your next project.
Where We Work
Our Service Area
RGD & Sons is proudly headquartered in Wilmington, DE, which allows our team to efficiently serve institutional, industrial, and commercial partners across all 3 Delaware counties, as well as portions of Eastern Maryland and Southeastern Pennsylvania in the heart of the Mid-Atlantic region. Have a commercial HVAC or plumbing construction project planned in the Delaware Valley? Send us a message through the website or call 302-652-3593.
Contact Info
Superior Quality HVAC & Plumbing Installation Solutions for Your Business Built on a Foundation of Quality Work at a Fair Price
400 Robinson Ln. Ste. A
Wilmington, DE 19805
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